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261 kWh C&I Battery Energy Storage Cabinet

Battery Energy Storage Solution (BESS) — C&I (125kW/261kWh)

Containerized commercial-scale storage system rated at 125kW/261kWh
Lithium Iron Phosphate (LFP) prismatic cells, 3.2V/314Ah per cell
Battery module configuration of 1P5S with 166.4V nominal module voltage
Rack configuration of 5 modules per rack (1P260P system, 260 total cells)
Rated voltage of 832V with operating range of 650V–936V
Typical charge/discharge duration of 2 hours at 0.5C max C-rate
90% typical depth of discharge with 235kWh usable energy
Round-trip efficiency (RTE) of 85%
Active liquid cooling using 50% ethylene glycol + 50% water coolant mix
Auxiliary power consumption of max 4kW for thermal management
Battery Management System with Pack BMU + Rack BMS architecture

Comprehensive protection: OV/UV/OC/OT (over-voltage, under-voltage, over-current, over-temperature)
Fire detection via heat and smoke sensors with automatic aerosol-based suppression
Communication via Modbus TCP/IP for building energy management integration
IP54-rated cabinet protection, total system weight up to 2700kg
Operating ambient temperature of -10°C to 55°C
Max operating altitude of 3000m (with derating above 2000m)
Suited for commercial sites needing containerized storage for load-shifting and backup resilience.

Key Features

261 kWh energy capacity with 125 kW charge/discharge power for commercial and industrial applications.
LFP (Lithium Iron Phosphate) cells, 3.2 V / 314 Ah nominal per cell.
832 V DC nominal system voltage with an operating range of 650–949 V.
5 battery packs in series, with 260 total cells and 52.2 kWh energy per pack.
90% round-trip efficiency, with typical performance of 92–95%.
Long-life cell design with ≥6000 cycles at 80% DoD to 70% SoH.
10-year expected system life for typical C&I duty.
Liquid-cooled thermal management with integrated vertical cooling plates between cells.
5 kW nominal chiller capacity with water-glycol coolant.
Battery operating temperature range of -10°C to +55°C, with an optimal range of 10°C to 45°C.
Centralised coolant circulation across all 5 battery packs.
Distributed temperature monitoring with thermistors per pack and chiller feedback.
Integrated BMU/RBMS architecture for battery monitoring and management.
Grid-tied and standalone (islanding) operation with EMS-based charge/discharge scheduling.
Comprehensive protection including over-voltage, over-current, over-temperature, anti-islanding and ground-fault detection.
Three-tier fire suppression at pack level, cluster level and full-cabinet level.
IP65 battery compartment with IP54 cabinet protection.
System dimensions: 980 × 1330 × 2251.5 mm.
Estimated system weight: approximately 2500 kg.

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